Everyone's body is different, so it's hard to say...I had a miscarriage on March 20th and was told by my doctor that I should get a period around mid-April (4 weeks total). I know that ovulation can happen before then, but since your body has to adjust back to normal, it's very hard to say if you will be ovulating on a specific day or around then.
I KNOW it's hard to wait, but my doctor highly recommended we wait to try again until I've had a period, that way I know my body is definitely on track again and everything is working normal. Also, I've heard antibiotics are not good to take while you are pregnant, so perhaps you should wait until you are at least done with them?