Period

I have a complain to make to you so that you can help me with solutions, on the month of April I saw my period two times,my normal flow is four days but the second period in April lasted for about 10days and its was not flowing very well just little amount of blood.Then on the 30th of May I saw my next period and since then i haven't seen my period after having sex on the 15th of June but on the 16th of june blood came out of me like normal period but it's lasted for two days and up till now I haven't seen anything, I did pregnancy test but it's was negative, I want to know if this is normal or there's an issue with me or something

Thanks.