Delayed, pale watery, longer period.

- My period was delayed this time by 10 days and when I did get it the bleeding was watery and pale "red". Within two - three days it was yellowish and watery, I guess some part of the blood that isn't red was getting shed - 1st time. - The period is still going on for the 7th day although scanty. My period are typically 5 days long & last 2 days very scanty. - Since about 4-6 weeks, I've been experiencing night sweats & in the last week or so hot flushes too. - In Sept, I had contracted a UTI which was perhaps my first and was extremely painful lasting a few weeks. - A little background - I had lymphoma last year,  undergone chemo &  is in complete remission. It took just a month after my last chemo cycle for my periods to resume & were very regular for 11 periods. - My Questions: Is the chemo that could be causing these abnormalities? Are the UTI and the watery periods related? Could they be a sign of low estrogen, if so induced by the chemo? Is this the onset of menopause?