Abdominal pain, first trimester and exercise?

I m currently in my first trimester with my 3rd child. Please note that I am scheduled to see a gynecologist in 3 weeks, we are in the middle of moving to a new town and my appointments have already been made.

Here s a little back story to this, so please stay with me. I used to be quite overweight (230+ lbs at my heaviest) but have radically changed my exercise and diet since the birth of my second son and am now at 130 lbs.

Like my first two I have no nausea, no headaches or symptoms besides odd cravings. But this dull and persistent pain in my lower abdomen is not going away. I recall getting twinges of pain with my first two that were explained by my uterus stretching with fluid. But it came and went in short bursts and dissappeared by month 3. This is permanent and not enough to hinder my parental duties or extreme at all. But it s 24 hours a day, all the time.

Any ideas on what it might be? It s driving me insane!

I have not been working out, just walking 5+ miles a day (half of what I used to do in a day)

Is any exercise safe now? I m probably going to wait until I see a doctor anyway before getting active again. But if he gives me the OK I d like some ideas that are not too strenuous.