Embarrasing Mistake With Penis Pump

I am a 32 year old healthy male. Last night my girlfriend and I were playing with our sex toys. During this time, I used a penis pump for the first time. I used it for about 2 five minutes sets, under light to moderate suction. I experienced no pain or discomfort while using the device, and experienced no problems till this morning. This morning I had sex with my girlfriend, but I could only get partially erect. After wards I noticed, that my penis had shrunk very quickly to about half it's normal flaccid size & was somewhat hard. I was concerned at that point about not being able to maintain a full erection, so I tryed unsuccessfully to do so. After a couple of hours, while I had some minor pain my penis visually seemed to return to normal. This evening while kissing my girlfriend I did get my erection back, but after wards it shrunk again to a very small size and is somewhat hard. This is where I am at right now, I am really confused, I made an appointment to see a local urologist but they can not see me till Tuesday (that is in 5 days).

Other than the symptoms above, I am experiencing some minor pain/ discomfort, and lack of elasticity. I am worried about tissue damage & circulation at this point and I am not sure what to do. Is this a medical emergency? Should I go to an emergency room or a hospital? I am beginning to get a little scared, and am a little apprehensive about waiting 4 or five days to see a urologist.
Is this a normal or a temporay side effect?
I am also wondering about the possibility of Peyronie's disease.
Any Help would be greatly appreciated,
Paul