I am 35, G3p 0030, always had hx regular menses, every 28days, lasting 4 days. Had paraguard x 8 months, removed 9/3/12, 2/2 displacement while menstrating. had following cycles since then that were 29, 30, and 23 days respectively. All of those cycles were only 2 days duration. I have been trying to concieve since the IUD removal (happened very quickly with prior pregnancies). should I be concerned with these more irregular/ shorter periods?