I had brown watery spotting for 6 days on and off no consistency to flow and then red spotting to red light bleeding for a few days after. is it possible that was implantation or just an early period? increased hunger and mood swings since it stopped?

Conception occurs within day or so of the sex. It takes about 3 weeks for the embryo to make enough HCG for a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow instructions for the test carefully.