Leg amputated symptoms and conditions

ive been taking ovcon35 for about 4 months now, and for some reason for the 4 months Ive been on it I always star my period 3-4 days earlier and Ive been havin leg pain for the padt 2 months im getting concerned could it be blood clots in my leg viens I heard if that happens that I would have to get my leg amputated and frankly i would rather get pregnant than loose a leg, please let me know if this is normal, I have leg pains right now my leg feels tingly and cold Im very affraid shoud I go to the er.