Hi

Not sure where to start. I have been on my period 4 times within 6 weeks some are lighter than other times and took 2 pregnancy tests but are negative. Came off my period in middle of the week but on and off bleeding still happens. This time my period was unusually  lighter but still lasted the normal 3 days, been bleeding today as well and my right book keeps hurting me and are heavier than normal. Every now and then I will be sick and sometimes up to 10 times a day but feel sick constantly and always tired. Any advice? Thanks in advance