37 Years Old, Always Regular Periods, Recently put on 25mcg Levothyroxine for Hypothyroidism, Now 6 days late with period, after recent bloodwork DR increased to 50mcg Levothyroxine started today. Also went for pregnancy blood work today and have not heard from lab as of yet. Have cramping but no period. Did do home pregnancy test two days ago and it was negative. Thoughts??