IUD removed

I had my iud removed on 10/10/17. Had it for 3 years, no periods at all. Going on 10 weeks since I’ve had it out. I have had about 5-6 single days where I would wipe and their will be spotting. None of the days were consecutive. Actually haven’t had a full period yet. Has this happen to anyone or how long before I should get my period? Me and my husband have had unprotected sex but otc test have all been negative. Any ideas on what i should do??!? Thanks.