Trying to conceive for about 5 months. had 3 to 4 chemical pregnancies. my last period was quite painful. spotting during ovulation. see a doctor?

Yes: Sorry about your losses. If you were truly pregnant and have had 4 documented miscarriages, then by definition, you have a history of repeated pregnancy loss. I would suggest that you use some means of birth control until you see your gyn or a fertility specialist who is very familiar with rpl. There are a number of identifiable causes and successful treatment options that are available.