Enlarged Spleen, pain, and excessive gas with no answers?

A bit of background on my diagnosis and surrounding issues.

Back in October 2011, my father was admitted to the ICU with NHLymphoma complications and passed away a month later. This was unexpected - he was only 55, and I am only 27. A lot of stress from that month until current, not to mention grieving.

In mid-January I began to have spasms of pain on my left side underneath my rib cage. I went to see my GP and after palpitating my left abdominal area he said he felt I had an enlarged spleen. They took bloodwork, urine sample and scheduled me for a liver/spleen scan (nuclear medicine with the dye). Bloodwork came back normal, a few insignificant things just a tad high but RBC and WBC were fine. Urinalysis was clean. Liver/spleen scan showed mildly enlarged spleen. GP said to come back in 6 months and rescan or if symptoms get worse.

Fast forward to this month, mid-February. I was pretty annoyed my GP didn't do anything else, including a VERY NORMALLY prescribed scan - ultrasound or CT. Considering my age he probably thinks I just had an infection or pulled muscle or something. I set up an gynecology appointment to rule that out. Ovaries were fine, exam went well - awaiting PAP results but OB-GYN didn't seem concerned. To be honest I was hoping it was a simple vaginal infection causing the spleen enlargement.

I had no other symptoms except pain and spams underneath the rib cage. In the past month I noticed I've had a lot more gas - no burping but definitely more passing gas than normal. No change in bowel movements, no fever or jaundice, no change in eating habits or nausea. Just the constant pain which now started to radiate to my back and down into my hip (all on the left side). Two weeks ago, after going to the bathroom, I saw what looked like two small white balls - almost chickpea size - in the toilet. Never happened again, and I had accompanying diarrhea and terrible cramping right before. After going to the bathroom I was fine.

I feel generally okay. I still don't seem to have many symptoms beyond the pain and the excessive gas. I am looking into seeing a second doctor since I'm still unhappy with my first one. I've read as much as I could on spleen enlargement and the results aren't comforting. Considering my father's illness and death, Lymphoma is a big concern for me, but the accompanying 'symptoms' I have don't seem to match up with anything.

Since this morning, my middle back just under the rib cage hurts severely and is tender to the touch. My hip still hurts and I get small stabbing pains all along my left abdomen and side once in a while. I don't know where to go from here and I'm pretty scared about especially Lymphoma, pancreas and kidney issues. I'm unsure if I should go to the emergency room now or if I wait until Monday to try and get an appointment. I can't imagine this could all be stress related and no one seems to have an answer as to WHY my spleen is enlarged. They don't tend to enlarge just because - usually infection but I've not been sick and my bloodwork is normal!

Anyone have any ideas on what type of scans or tests I should specifically request or maybe you could offer some insight if you've had these issues?

Thanks