Officially off BC/No AF/BFN... ??

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Went off BC in November. AF showed up around usual time frame (Nov 25) and was expected to get AF again on Dec. 23. Went on a trip with my hubby between those times (tmi- lots of baby making in/around ovulation time) but, so far: No AF, BFN, and some pregnancy symptoms— (sore boobs, some nausea, extremely tired)... Just curious if anyone else coming off of BC experienced the same thing or if I should test again (currently 8 days late) or would you recommend contacting your doctor? Just new at this and feel clueless.